Card Setup
Sealevel Systems
ISO-16
Page
2
Card Setup
The
ISO-16
contains several jumper straps for each port that must be set for
proper operation.
Address Selection
The
ISO-16
occupies 4 consecutive I/O locations. The DIP-switch (SW1) is
used to set the base address for these locations. Be careful when selecting the
base address as some selections conflict with existing PC ports. The following
table shows several examples that usually do not cause a conflict.
Address
Binary
Switch Settings
1
2
3
4
5
6
7
8
100-104
01 0000 00xx
On
Off
On
On
On
On
On
On
104-108
01 0000 01xx
On
Off
On
On
On
On
On
Off
200-204
10 0000 00xx
Off
On
On
On
On
On
On
On
280-283
10 1000 00xx
Off
On
Off
On
On
On
On
On
284-287
10 1000 01xx
Off
On
Off
On
On
On
On
Off
2EC-2EF
10 1110 11xx
Off
On
Off
Off
Off
On
Off
Off
300-303
11 0000 00xx
Off
Off
On
On
On
On
On
On
320-323
11 0010 00xx
Off
Off
On
On
Off
On
On
On
388-38B
11 1000 10xx
Off
Off
Off
On
On
On
Off
On
3A0-3A3
11 1010 00xx
Off
Off
Off
On
Off
On
On
On
3A4-3A7
11 1010 01xx
Off
Off
Off
On
Off
On
On
Off
Figure 1 - Address Selection Table
The following illustration shows the correlation between the DIP-switch
setting and the address bits used to determine the base address. In the example
below, address 300 is selected as the base address. Address 300 in binary is
XX 11 0000 00XX where X = a non-selectable address bit and address bit A9
is always a 1.
1 2 3 4 5 6 7
ON
OFF
A9
A2
8
Figure 2 - DIP-Switch Illustration
Note
: Setting the switch ‘On’ or ‘Closed’ corresponds to a ‘0’ in the address,
while leaving it ‘Off’ or ‘Open’ corresponds to a ‘1’.
